The Ring Alarm Contact Sensor expands your Ring Alarm and adds an extra layer of security to your home. You can attach Alarm Contact Sensors to any door or window in your house or apartment and when armed, you'll get instant alerts on your phone and tablet whenever they open.

Highlights:

• Material: Plastic
• Color: White
• Power Source: Battery Powered
• Indoor or Outdoor: Indoor
• Height: .55 inch
• Width: 2.09 inch
• Battery Size: CR2032
• Depth: 1.56 inch
• Requires the Ring alarm base station
• Get alerts on your phone and tablet when doors or windows are opened
• Monitor your home from any iOS or Android device
• Easy installation with no tools required
• Mounts to door and window frames
• Packaging Type: Boxed